Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)
- 2003.11a
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- Pages.87-90
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- 2003
A Study On the Feedforward Linear Power Amplifier Using Imperfect Signal Cancellation And Feedback
Imperfect Signal Cancellation과 Feedback을 이용한 Feedforward 선형전력증폭기에 관한 연구
- Park, Jung-Min (School of Electronics Eng., Soongsil Univ.) ;
- Yang, Seung-In (School of Electronics Eng., Soongsil Univ.)
- Published : 2003.11.15
Abstract
In this paper, A feedforward linear power amplifier is analyzed for imperfect signal cancellation and negative feedback for basestaion of IMT2000 band. the distortion generatied by the error amplifier is reduced using an imperfect signal cancellation for a 1-carrier WCDMA source by 4.3dB at 2.5MHz offset and 6dB at 5MHz offset of IMSR(intermodulation signal power ratio) compared to a perfect signal cancellation system. additionally, An imperfect signal cancellation using negative feedback improved 1.3dB and 8.2dB at 2.5MHz and 5MHz offset of IMSR compared to an imperfect signal cancellation.
Keywords